Island



(No Model.)

A." P. BROWNE. AUTOMATIC FLUSH-ING DEVICE.

No. 416,091. Patented Nov. 26, 1889.

fa /Z UNITED STATES PATENT OFF CE.

ALEXANDER P. BROIVNE, OF BOSTON, MASSACHUSETTS; ASSIGNOR TO THE IVEEDENSANITARY HANUFACIIURING COMPANY, OF RHODE ISLAND.

AUTOMATIC FLUSHING DEVICE.

SPECIFICATION forming part of Letters Patent No. 416,091, dated November26, 1889.

Application filed June 19,1889. Serial No. 314,816. (No model.)

To all whom it may concern: the tank. The end of this siphon is within aBe it known that I, ALEXANDER P. BROWNE, floatable cup G, the bottom ofwhich is formed of Boston, in the county of Suffolk and State as avalve, which rests upon and normally of llIassachuset-ts, a citizen ofthe United closes a water-way into the flushing-pipe ll. 55 States, haveinvented certain new and use- This flushing-pipe may also itself beprovided 'fulImprovements in Automatic Flushing Deat its upper end witha siphon, (shown at 1-1,) vices, of which the following is aspecification. although, as will be hereinafter pointed out,

My invention relates to that class of appathis last feature is notessential. ratus in which the flushing of the bowl of a In order toregulate the discharge of water 60 IO urinal or similarstructureisaccomplished by in the operation of the apparatus, thecupmeans of siphon action produced by the valve G, with its water-wayand the flushingdownward and outward passage through a siphon l-I, maybe inclosed within chambers pipe of suitable caliber of liquidintroduced partitioned, as shown, from the main body of from withoutinto the bowl. the tank, but connecting therewith by small 65IIeretofore several forms of these devices orifices g h, as shown, thisfeature of conhave been constructed in which the overflow structionbeing common and well known for through a pipe of suitable caliber ofliquid the purpose. poured into the bowl produced a rarefaction I willnow describe the operation of the apof the air in the long leg of asiphon-formed paratus: Assuming the tank 0 to be filled 70 2oflushing-pipe, the short leg of which commuwith water to its normallevelas, for examnicated with a tank or other suitable waterple, a a-itis obvious that the cup-valve G supply. According to my presentimprovewill be filled with water and will rest upon ment, although Istill employ the principle of and close the water-way into theflushingsiphonage brought about by the discharge valve B. If new liquidJoe poured into the 75 from the bowl of its liquid contents, yet I dobowl A and descend through the pipe D, it

not avail of this siphonage to start the flushwill expel the airtherefrom, thus raret'ying ing action directly, but through the interthe air in the pipe F. This will produce sivention of a fioatable valve,as will l1ereinphonicaction inthatpipe,whichwillfirstlower after appear.the water-level in the chamber surrounding 8o In the accompanyingdrawings I have repthe cup-valve G down to the level of the cup,resented in elevation and section at Figure l and then continuing willempty the cup of its a device embodying my present invention in liquidcontents sufficiently to cause it to float a convenient form, and atFig. 2 an illustraup and open the water-way into the flushingtion of asimplified form thereof. pipe B, thereby allowing flushing-water to de-85 In the drawings, A represents the bowl to scend through that pipe tothe bowl until such be flushed; B, the flushing-pipe leadingtheredescent of the water lowers the cup-valve G to and O the tank orwater supply. Below back to its original position and closes the thebowl I provide an outlet or waste pipe D, water-way. I of suitablecaliber, through which liquid The essential parts of the apparatus sofar 90 4o poured into the bowl from without may pass described arerepresented at Fig. 2, in which out. This pipe is provided with aback-air I) Z) show the level of the top of the cup, the cut-off d, andan overflow or surplus wastesubsequent withdrawal of water from whichpipe E may also be provided, as shown. The causes it to float upward andso open the function of the back-air cutoff is, as is well mouth of theflushing-pipe B. If, however, 5 known, to prevent air passing intothepipe'D a longer flush be desired, it may be obtained to supply theplace of that driven out by the by means of thesiphon attachment H, thesiflow of liquid through the pipe. phon action of which will be startedby the v In connection with the pipe D, and at a descent of water causedby the raising of point on the sewer side of the back-air cutthecup-valve, and the siphon-flush thus ob- I00 off, I provide an air-pipeF, extending uptained will continue until the level of the wardly andterminating in a siphon within water surrounding the short leg of thesiphon H has fallen sut'fieiently to uneoverits mouth, when the siphonaction breaks and the flush ceases. \Vater is then resupplied to thetank up to its normal level, thereby restoring the apparatus to itsoriginal condition.

I claim 1. In an automatic flushing device for urinals and similarstructures, the combination, with the bowl to be flushed, of aflushingpipe extending therefrom to the flushing-tank, a Water-way fromthe flushing-pipe to the interior of the tank, a fioatable cup providedwith a valve adapted to rest upon and close said Water-Way, a Waste-pipebelow the bowl having aback-air cut-off therein, and an airpipeextending from the said waste-pipe on the sewer side of the said aircut-off upwardly to the cup within the tank, and formed atits upper partinto a siphon having its short leg within the cup, substantially as setforth.

2. In a device of the character described, the combination, with thebowl to be flushed,

munieating with the water in the tank, a

fioatable cup provided with a valve adapted to rest upon and close saidwater-way, a wastepipe below the bowl having a back-air cutoff therein,and an air-pipe leading from the said waste-pipe on the sewer side ofthe said air out-off upwardly to the cup Within the tank and formed atits upper part into a siphon having its short leg Within the cup,substantially as set forth.

In testimony whereof I have hereunto subscribed my name this 15th day ofJune, A. D. 1889.

ALEX. P. BRO \VNE.

lVitnesses:

ELLEN 13. TOMLINSON, JOHN H. TAYLOR.

